Enhancement of the emission from TeO2 nanorods by encapsulation with ZnO
作者： Changhyun Jin , Hyunsu Kim , Chongmu Lee , None
关键词:
摘要: TeO2-core/ZnO-shell nanorods were synthesized by a two–step process comprising thermal evaporation of Te powders and atomic layer deposition ZnO. Scanning electron microscopy images exhibit that the core-shell are 50 - 150 nm in diameter up to few tens micrometers length, respectively. Transmission X-ray diffraction analysis revealed cores shells polycrystalline simple tetragonal TeO2 amorphous ZnO with nanocrystallites locally, Photoluminescence measurement had weak broad violet band at approximately 430 nm. The emission was shifted yellowish green region (∼540 nm) encapsulation thin film from enhanced significantly intensity increasing shell thickness. highest obtained for 125 ALD cycles (ZnO coating thickness: ∼15 its much higher than uncapsulated nanorods. origin enhancement is discussed detail. (© 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
sci-hub.se 参考文章(24)
S.N.B. Hodgson, L. Weng, Sol-Gel Processing of Tellurium Oxide and Suboxide Thin Films with Potential for Optical Data Storage Application Journal of Sol-Gel Science and Technology. ,vol. 18, pp. 145- 158 ,(2000) , 10.1023/A:1008717003930
Zhifu Liu, Toshinari Yamazaki, Yanbai Shen, Toshio Kikuta, Noriyuki Nakatani, Synthesis and Characterization of TeO2 Nanowires Japanese Journal of Applied Physics. ,vol. 47, pp. 771- 774 ,(2008) , 10.1143/JJAP.47.771
Paresh Shimpi, Pu-Xian Gao, Daniel G Goberman, Yong Ding, Low temperature synthesis and characterization of MgO/ZnO composite nanowire arrays Nanotechnology. ,vol. 20, pp. 125608- ,(2009) , 10.1088/0957-4484/20/12/125608
Khalil Arshak, Olga Korostynska, Preliminary studies of properties of oxide thin/thick films for gamma radiation dosimetry Materials Science and Engineering B-advanced Functional Solid-state Materials. ,vol. 107, pp. 224- 232 ,(2004) , 10.1016/J.MSEB.2003.11.014
XL Wu, GG Siu, CL Fu, HC Ong, None, Photoluminescence and cathodoluminescence studies of stoichiometric and oxygen-deficient ZnO films Applied Physics Letters. ,vol. 78, pp. 2285- 2287 ,(2001) , 10.1063/1.1361288
Lin Guo, Shihe Yang, Chunlei Yang, Ping Yu, Jiannong Wang, Weikun Ge, George K. L. Wong, Highly monodisperse polymer-capped ZnO nanoparticles: Preparation and optical properties Applied Physics Letters. ,vol. 76, pp. 2901- 2903 ,(2000) , 10.1063/1.126511
Lincoln J. Lauhon, Mark S. Gudiksen, Deli Wang, Charles M. Lieber, Epitaxial core–shell and core–multishell nanowire heterostructures Nature. ,vol. 420, pp. 57- 61 ,(2002) , 10.1038/NATURE01141
K. Vanheusden, C. H. Seager, W. L. Warren, D. R. Tallant, J. A. Voigt, Correlation between photoluminescence and oxygen vacancies in ZnO phosphors Applied Physics Letters. ,vol. 68, pp. 403- 405 ,(1996) , 10.1063/1.116699
Cheng-Liang Hsu, Shoou-Jinn Chang, Yan-Ru Lin, Song-Yeu Tsai, I-Cherng Chen, Vertically well aligned P-doped ZnO nanowires synthesized on ZnO-Ga/glass templates Chemical Communications. pp. 3571- 3573 ,(2005) , 10.1039/B504881H
A. Lecomte, F. Bamière, S. Coste, P. Thomas, J.C. Champarnaud-Mesjard, Sol–gel processing of TeO2 thin films from citric acid stabilised tellurium isopropoxide precursor Journal of The European Ceramic Society. ,vol. 27, pp. 1151- 1158 ,(2007) , 10.1016/J.JEURCERAMSOC.2006.05.029